Yeah, they are the same thing rebadged, that's pretty obvious. Flimsy bodies...check. Cheap knobs...check. Hissy audio...check. Let me add...noisy on the VHF airband, a ridiculously small and outdated display, a lousy front end in most bands, and no VFO knob.
Now, with that said...
For anyone wanting to hear P25 simulcast systems like the one here in Phoenix (that's a large and growing number of people), there is STILL nothing better, period. P25 audio sounds nearly as good as analog, while the Unidens sound robotic (yes even with updated firmware). The sensitivity / ability to decode distant P25 systems is FAR superior to Uniden, it's not even close! Though the Uniden has more quick keys than the GREs have scan lists, the GREs have far more memory, so by using virtual scanners you can scan more combinations of things, period. I max out the memory on my Unidens. The GRE has a VASTLY superior data transfer speed also. I recently bought another mint condition PSR-600 off of CL for $240. Try finding a mint 996 for that price!
And yeah, I've owned the PSR-600 and BCD996 (now own the BCD996XT), and their portable brothers since they came out, and bought the new version of each Uniden along with the RS versions of the GREs as soon as they came out, so I know what I am talking about. My BCD996XT scanner is used for analog (it has features that the BCT15X can't match), and the GRE scanners cannot match it at that, but for the RWC simulcast system it's GRE, GRE, and GRE.
So ease up on GRE, because they still do digital better than anything else out there, for a really reasonable price.